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/*
* Copyright (C) 2019 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.networkstack.metrics;
import android.net.captiveportal.CaptivePortalProbeResult;
import android.util.Log;
import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.annotation.VisibleForTesting;
import com.android.internal.util.HexDump;
import com.android.server.connectivity.nano.DataStallEventProto;
/**
* Collection of utilities for data stall metrics.
*
* To see if the logs are properly sent to statsd, execute following command.
*
* $ adb shell cmd stats print-logs
* $ adb logcat | grep statsd OR $ adb logcat -b stats
*
* @hide
*/
public class DataStallStatsUtils {
private static final String TAG = DataStallStatsUtils.class.getSimpleName();
private static final boolean DBG = false;
/**
* Map {@link CaptivePortalProbeResult} to {@link DataStallEventProto}.
*/
@VisibleForTesting
public static int probeResultToEnum(@Nullable final CaptivePortalProbeResult result) {
if (result == null) return DataStallEventProto.INVALID;
if (result.isSuccessful()) {
return DataStallEventProto.VALID;
} else if (result.isPortal()) {
return DataStallEventProto.PORTAL;
} else if (result.isPartialConnectivity()) {
return DataStallEventProto.PARTIAL;
} else {
return DataStallEventProto.INVALID;
}
}
/**
* Write the metric to {@link StatsLog}.
*/
public static void write(@NonNull final DataStallDetectionStats stats,
@NonNull final CaptivePortalProbeResult result) {
int validationResult = probeResultToEnum(result);
if (DBG) {
Log.d(TAG, "write: " + stats + " with result: " + validationResult
+ ", dns: " + HexDump.toHexString(stats.mDns));
}
NetworkStackStatsLog.write(NetworkStackStatsLog.DATA_STALL_EVENT,
stats.mEvaluationType,
validationResult,
stats.mNetworkType,
stats.mWifiInfo,
stats.mCellularInfo,
stats.mDns,
stats.mTcpFailRate,
stats.mTcpSentSinceLastRecv);
}
}
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